Engine Electrical System - Repair

• Troubleshooting
  • 61 20... Battery replacement information
    • Notes
    • Vehicles with energy management systems (IBS, power module): Register battery replacement
  • 61 13... Butt connector for repairing a plug connection
  • 12 00... Instructions for removal and replacement of control units
  • 12 00... Instructions for working on the ignition system
  • 61 00... Notes for disconnecting and connecting battery
    • Notes
    • Before disconnecting battery
    • General notes on disconnecting battery
    • After connecting battery
  • 61 13... Notes for opening contacts and locks of different plug contact systems
    • Notes
    • Repair instructions for opening connector housings and removing contacts of different connector systems
      • Connector system D 1.5/D 2.5
      • Connector system JPT/MDK/DFK
      • Connector system Elo/Elo Power
      • Connector system LSK
      • Connector system MQS/MPQ
  • 61 00... Notes on handling wiring harnesses and cables
    • The following applies in general
    • The following additionally applies
  • 12 00... Notes/information on start assistance (jump starting)
    • Notes
    • Preparation
    • Operation
  • 00 Safety information for working on vehicles with automatic engine start-stop function (MSA)
    • Notes
    • Observe safety precautions when working on MSA vehicles
    • MSA function is deactivated by
    • When working with diagnosis tools
• Ignition Wires, Spark Plugs
  • 12 12 011 Removing and installing/replacing all spark plugs (N54, N63 B44 0/1, N74)
    • Notes
    • Clean spark plug slot with compressed air
• Ignition Coil
  • 12 13 511 Replacing ignition coils (N63)
• Electronic Switching Or Control Units
  • 12 14 700 Coding control module (DME/DDE)
    • Switch on ignition
  • 12 14 705 Programming control unit (DME/DDE)
    • Switch on ignition
  • 12 90... Removing and installing/replacing electronics box
  • 12 90... Removing and installing/replacing electronics box add-on
  • 12 14 611 Removing/replacing left knock sensors (N63)
  • 12 14 610 Removing/replacing right knock sensors (N63)
  • 12 14 550 Replacing control unit (DME) (N63)
    • Notes
    • Injector adjustment
  • 12 14 521 Replacing crankshaft pulse generator (N63)
    • Notes
    • Installation location
  • 12 14 512 Replacing pulse generator on left exhaust camshaft (N63)
  • 12 14 522 Replacing pulse generator on left intake camshaft (N63)
  • 12 14 513 Replacing pulse generator on right exhaust camshaft (N63)
  • 12 14 526 Replacing pulse generator on right intake camshaft (N63)
• Alternator With Drive And Mounting
  • 12 31 020 Removing and installing or replacing alternator (N63)
  • 12 31... Replacing alternator belt pulley (with overrunning clutch)
• Controller
  • 12 32 501 Replacing voltage regulator
• Starter With Mounting
  • 12 41 020 Removing and installing/replacing starter (N63)
  • 12 41 041 Replacing solenoid switch
• Starter Lead
  • 12 42 550 Replacing battery positive lead between starter, alternator and battery positive terminal (N63)
  • 12 42 540 Replacing safety battery terminal (SBK)
    • Notes
    • Battery in engine compartment
    • Battery in luggage compartment behind side trim panel
    • Battery in luggage compartment under floor trim panel
    • Battery in luggage compartment under spare wheel
    • Installation
• Engine Wiring Loom
  • 12 51 001 Replacing wiring harness section for engine (N63)
  • 12 51 100 Replacing wiring harness section for ignition and injectors (N63)
• Oil Pressure/Oil Temperature/Oil Gauge
  • 12 61 285 Removing and installing/replacing oil level sensor for engine oil (N63 B40/B44 O 0/1)
  • 12 61 280 Removing and installing/replacing oil pressure sensor (N63 B40/B44 O 0/1)
    • Notes
    • Installation location
• Control Unit Box
  • 12 90... Removing and installing/replacing electronics box
  • 12 90... Removing and installing/replacing electronics box add-on